L0068937 Rotulum hieroglyphicum G. Riplaei Equitis Aurati Credit: Wellcome Library, London. Wellcome Images Cryptogram 4 of 7, the image of a golden eagle upon a sphere which is flanked by feathers. The eagle has a man's head. Above the eagle is a sun image. Image taken from Rotulum hieroglyphicum G. Riplaei Equitis Aurati, an alchemical manuscript of the 16th century showing the processes for the production of the philosopher's stone in pictorial cryptograms. c. 1600 By: George RipleyPublished: - Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0